Is this genetic? and weird to you?

Dreams are part of you subconscious. Meaning, the things around you, in your waking life are clues to what will happen next in the future. You don't always notice them at first but with you there seems to be a part of your brain that makes these subtle connections and make conclusions that turn out true. This isn't abnormal nor supernormal. That's just how your brain works. I'm sorry about your relative though. But I hope you grow to live with this because this is just how you are. Hope that helped a bit.